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Male Guillaume I De Bethune Click to view Guillaume I De Bethune in the family tree

Guillaume I's father was Robert IV De Bethune and his mother was Alice De Peronne.  His paternal grandfather was Robert III De Bethune; his maternal grandfather was Robert II De Peronne.  He was an only child.  He died in 1144.

Family Details of Guillaume I's family with Clemence D' Oisy

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